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Accounts receivable - Sensitivity of the Company's risk on final settlement (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Iron ore
IfrsStatementLineItems [Line Items]
Thousand metric tons	22,564
Thousand metric tons	102
Variation percentage		10.00%
Effect on Revenue from increase in risk assumption	$ 230
Copper [Member]
IfrsStatementLineItems [Line Items]
Thousand metric tons	77
Thousand metric tons	7,811
Variation percentage		10.00%
Effect on Revenue from increase in risk assumption	$ 60

X

- Definition

The amount of increase (decrease) in the fair value measurement of assets, recognised in profit or loss after tax, due to a reasonably possible increase in an unobservable input. [Refer: Tax income (expense)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 13
-IssueDate 2023-01-01
-Paragraph 93
-Subparagraph h
-Clause ii
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-URIDate 2023-03-23

+ Details

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Period Type:	duration

X

- Definition

The percentage of a reasonably possible increase in an unobservable input used in fair value measurement of assets.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 13
-IssueDate 2023-01-01
-Paragraph 93
-Subparagraph h
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2023-en-r&anchor=para_93_h_ii&doctype=Standard
-URIDate 2023-03-23

+ Details

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X

- References

No definition available.

+ Details

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X

- References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Details

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Period Type:

X

- Details

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